Improvement in permutation locks



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'Permutation Locks.

No. 135,957. P`atemedFeb.1s,1a13.

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y Permutation Locks. No.135,957. l ParentedFeb.18,1s73.

WITNESSES AM. PHaro -uTHa GRAPH/c co. NX( oseonue FRU cess) V6Sheets--Srheetfn T. B. WURRELL. f Permutation Lacks.

Patented Fb.18,1873.

AM. PHoro-urHaGRAPH/c ca MMOWMNE Pnucsss) WITNESSES T. B. woRRELL.

Permutation Locks.

` Patented Feb.18,1873.

' safe.

`UNITED STATES PATENT GEEIGE.

THoMAs B. WOREELL, 0E PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN PERMUTATION LOCKS.

Specification forming part of Letters Patent No. 135,957, dated February 18, 1873. l`

l To all whom it may concern:

Beit known that I, THOMAS B. WORRELL, of the city and county of Philadelphia and State'of Pennsylvania, have invented an Improved Lock for Banks and other purposes,

of which the following is a specilication:

The iirst part of my invention relates to the construction and operation of the combination. The second part of my invention re- -lates to setting the combination for locking or unlocking. The third part of my invention relates to supporting and guiding the actuating rack. The fourth part of my invention 'relates to dovetailing the dog of the lock in theface-plate of the same. The fifth part of my invention relates to a rack-arm, in combination with other parts, whereby two of the bolt-heads are operated; if the combinationl should be forced oft' this rack would be carried with it, and thus prevent the bolt-heads from being shot in. The sixth part of my invention relates to an idle or false wheel, in combination with the screw-spindle.

Figure 1 isa plan view, showing the means employed for shooting the bolts from two pinions. Fig. 2 is a plan view, showing the means of shooting the bolts from one central pinion. Fig. 3 is a side view of the combination mechanism. Fig. 4 is a face view of one of the notched wheels of the combination. Fig. 5 is an edge .view of a notched wheel of the combination, showing the false slots. Fig.6 is an edge view of a notched wheel of the combination, showing the notches. Fig. 7 is a view of a combination spur-wheel and pinion. Fig.`

Sis an edge view of Fig. 7 Wit-hout the pinion. Fig. 9 is a view of the elevating screw-spindle. Fig. 10 is atransverse section of Fig. 9 through the dotted line a b.` Fig.'11 is a front and edge view of the actuating rack and its yoke.k

Fig. 12 is a surface and end view of the combination hub. Fig. 13 is a vertical longitudinal section through the spindles and combination. Fig. 14 is an edge view of the idle or false wheel. Fig. 15 is a view of the dialplate.

A, Fig. 3, is the door of a lreproof or other B is thelock-plate secured to the inside of the same. Gis a combination on the spindle' D., It consists, in4 this instance, of the i. spurgear wheels E E and the notched Wheels FF separated bythe washers a a a.

g lof the hub k, Fig.- 12, on which the combination wheels turn. The hub not only answers for a center of revolution for the wheels of the combination, but also, in connection with the flattened spindle, raises the combination. That portion of the spindle contained within the door A of the sate'can have conical collars, as

shown by the dotted lines, to prevent it from being forced in or drawn out.

L, Figs. 3 and 13, is a spindle, which is operated by the knob M. N is a pinion, which, together with its elongated hub 0, has a slid- F.ing motion on the spindle L. It is held from turning independently of the same by a feather and slot. An enlargement, h, of the hub 0 has a groove out around it, into which takes the slotted end ofthe carrier P, whose hub Q screws `on the spindle D.

whichslides upon the lock-plate B. Itis supported and guided by the lugs or projections c' on the yoke S, which fit into the longitudinal slot j of the rack-bar, with which the pinion N of the spindle L meshes orrgears. yoke straddles the ilange of the hub k, and is also additionally secured by a beveled-ed ged piecescrewed to the lock-plate.

T T1 T2 T3, Fig. 1,l a-re bolt-heads, from which extend the bolts k k1 k2 k3. Each has an inwardly-projectingrack-arm, U U1 U2 U3. The former two, U U1, gear with the pinion V,

while thelatter two, U2 U3, gear with the pinion V. Suitable guides l Z l m m1 m2 n n1 a2 o o1 02 serve to preserve the rectilinear motion of the bolt-heads and the rack-arms. Theprack-arm the arm p, Fig. 2, which engages in a vertical slot in the rack-bar.

The rack-arm U4l gears t A i r knob J. The part e f of its length is flattened to correspond with the flattened upper surface R, Figs. 1 2 11 13, is an actuating rack-bar,

The

U1 is connected to the actuating rack-bar R by with the pinion Vf., It is fastened to the bolthead T, and passes over the combination. The rack-arms U2 U3 are shot in and out by the motion it imparts to the pinion V'. This rackarm is one ofthe features of theinvention. if the combination C should be forced oft' by a burglar or safe-operator the rackarm U4 must go with it, whereby 'the only way of shooting back the bolt-heads T2 T3 would be removed.

In the supplemental view, Fig. l, the dog W is shown dovetailed into the plate B of the lock to prevent its displacement by force. Since the dovetail projection is attached-to the dog, which is secured to the bolthead T and the rack-arm U, it moves in the dovet-ail recess of the plate coincidently with them. Besides serving for a protection to the lock, it preserves the rectilinear motion of the bolthead and rack.

As shown at Figs. G, 7 S, pin or screwhholes c are drilled between the teeth of the spurgear wheels E E', and also between rows of the notches of the notched wheels F F', in which the tappets Gr are secured by the teeth and screws in the rst instance, and by the notches and the screws in the second.

The construction of the screw-spindle D is such that one revolution of the handle or knob J carries the pinion N out of contact with the actuating rack-bar R, and into contact or gear with the spur-gear E, Fig. 3. Six more revolutions move it from the spur-gear wheel E into contact with the 'spur-gear wheel E'. The carrier P, whose hub Q meshes with the screw of the spindle, and whose slotted end connects with the enlargement 7L of the elongated hub O, moves the pinion back and forth on the spindle L.

The combination G is at its lowest point when the flattened surface of the bore of the hub K rests upon the flattened surface ot' the screw-spindle D. Every turn` of the spindle advances or retreats the pinion N and elevates the combination by reason of the rounded part v of it taking against the flattened part of the hub. When the pinion moves the combination rises to clear it.

At Figs. l 2 the bolts are shown shot forward, and the door A locked. If the combination of the spur-gear and notched wheels has not been disarran ged, the door can be unlocked by turning the knob M of the spindleL in the proper direction. The pinion N,in gear with the actuating rack-bar R, retreats it, and it in turn being connected to the rack-arm U1 by the arm p, causes the bolt-head Tl to shoot in. The rack-arm U, also in gear with the pinion V, retreats the bolt-head T. The rack-arm U4 now comes into play; being attached to the bolthead T, it partakes of its motion, and thereby rotates the pinion V' with which it gears. The rack-arms U2 U3, gearing with the pinion 4V', have a rectilinear motion imparted to them, by which they move the bolt-heads T2 T3. The dog W in its descent takes into the slots H of the combination and keeps it from being changed.

After the door of the vault or safe has been closed and the bolts shot out, the combination must be shifted by turning its handle or knob J one revolution, which moves the pinionwheel N into gear with the spur-gear wheel E, which must be turned by the pinion until its slot H is in such position that the dog W cannot possibly enter it. The screw-'spindle is now turned six revolutions, to bring the pinion-wheel into gear with the spungear wheel E', which it turns until its tappet G collides with the tappet of the notched wheel F', and that in turn with the tappet of the notched. wheel F, and so on until each wheel of the conibination is moved until the positions of the dog-slots H prevent the dogW from entering.

To arrange the combination for unlocking, it must be understood that each screw-hole c is numbered, and, before lookin g, a number must be selected for each wheel of the com bination where its tappet is fixed; each number has reference to the dog-slot of its wheel, into which the dog takes when the bolts are retreated. The numbers selected must only be known to the persons in charge of the safe. The pinion-wheel N gears separately with the spnrgear wheels and with the rack-barR which moves the bolts. It is moved into gear with the spur-gear E by turning the spindle D seven revolutions. The spur-gearE' is turned by the pinion until its tappet collides with the tappet ot' the adjacent notched wheel F', which is turned until its ytappet contacts with the tappet of the second notched wheel F, which is also turned until the screw or tappet strikes with the teeth ofthe pinion. The three wheels are together turned until they have moved the number of divisions of the dial equal to the number of the pin-hole of the notched wheel F, which brings its dog-slot H into its proper position. The spurgear is reversed until its tappet collides, in the opposite direction, with the tappet of the notched wheel F', which it moves around until the tappet or screw of the wheel E' engages with the pinion N 5 then'the wheel F' is turned until the number of divisions of the dial moved are equal to the number ot' the screw or pin-hole. The spur-gear E' is again reversed. When its screw or tappet contacts with the pinion it is turned back until its number is indicated by the number of divisions ofthe dial moved, which brings its slot immediately under the dog. Y is an idle orfalse wheel on the spindle D, which is placed in this instance between the inside of the vault or safe door and the plate of the lock. It is intended to prevent any feelin-g or tant perin g with the coinbinationby drillinginto the lock and inserting a wire or other feeler. A hole to reach into the combination must pass through the wheel Y; it, being on the spindle D, and turning with it, requires the feeler to be withdrawn before the spindle can be operated in trying the combination.

I clainir l. The screw-spindle D, in combination with the hub K, spur-gear E E', notched wheels F F,tappets G, carrier P, spindle L, pinion N,

the combination C, and secured to the bolt head T, in con'Jbin-ationV with the rack-arm U, also secured to the bolt-head T and thepinions V V', for the purpose shown and described.

6. The false or idle Wheel Y arranged lo turn with the spindle D, for the purpose shown anddescribed.

In testimonyWhereofhereunto sign myname in presence of two subscribing Witnesses.

THOS. B. -WORRELL Witnesses at signing:

FRANoIs D. PAsToRIUs, EDMUND P. COCHRAN. 

